Hi everyone.

I have 10 PLC S7-300, CPU-319-3, these need to be communicated by ethernet, one of the plc is the master in the manufacture process,  the others 9 PLC are slaves, and request information to the master, the table of data is about 90 bytes per every slave plc.

I need to advice about how will be the best scheme of comunicaction.

I will like to program the 09 conections in the master PLC, and this will manage the comunication with the slaves, using "put" and "get" blocks. What do you think about that scheme?

Best regards.

miguelecastroa

Hi everyone.

I have 10 PLC S7-300, CPU-319-3, these need to be communicated by ethernet, one of the plc is the master in the manufacture process,  the others 9 PLC are slaves, and request information to the master, the table of data is about 90 bytes per every slave plc.

I need to advice about how will be the best scheme of comunicaction.

I will like to program the 09 conections in the master PLC, and this will manage the comunication with the slaves, using "put" and "get" blocks. What do you think about that scheme?

Best regards.

 Hi,

Look at this thread, a very good summary:

https://support.industry.siemens.com/tf/us/en/posts/103920/

Also have a look at this:

https://support.industry.siemens.com/cs/us/en/view/18610307

I think put/get is easier to implement, but more common to use send/recieve in plant wide coms. Anyways you do not send large amount of data. If you use put/get make sure your CPU have enough S7 connections.